Started off with a Panasonic 4GB SDHC card, the camera says it can store 1K pictures, took 900 photos under the following conditions

- Image size Large - Camera default (12MB per picture)- Imagq Quality JPEG NORMAL (camera default)- frequent use of LCD display for image playback, zooming in and out, browsing etc.- frequent use of LCD for changing modes, aperture, speed checking etc.- dozens of short 20 seconds video clips in normal SD mode- only a handful (about a dozen) of Live View shooting- VR on lens is OFF- No Flash used at all

By the end of the day, the Nikon EN-ELe3 battery had the red low battery indicator, and only 400 pictures storage left in the card..

The Nikon D90 is tested up to 100K shutter clicks... so that means if you take 1K pictures a day, the D90 will be out of gas at the end of three months, by which time, a new model will be announced ;-)